Building a house is a difficult undertaking. But even experienced workers say that the construction of the "box" is sometimes easier and cheaper than installing the roof. This is due both to the complexity and danger of this event, and to the price of materials for covering the roof.
You always want to somehow reduce the cost of the process, and in the case of a limited budget, saving may be the only possible solution, because otherwise it will be very difficult to finish the construction. To help you save your money without sacrificing quality, the folded roof can.
What it is?
This is the name of the technology when metal or even plastic acts as the material for covering the roof . In this case, individual sheets are fastened together by means of folds. So called twisting of the edges of the metal. There are different ways of doing this work, but currently special electric folding machines are leading in frequency of use. Their use allows you to speed up and simplify the process of laying metal.
A bit about the cost
By the way, how much does the rebate roof cost? The price per square meter depends on its type: if you make the roof yourself (from rolled or sheet iron), then you will pay only for the cost of metal. In the case of the purchase of a finished kit, the cost of such a roof will exceed 1700-2000 rubles per square meter.
General Installation Information
The advantage of this type of roof is that it can be mounted both on the crate and on a solid base. Attention! It is the second option that is preferable, since in the first case you will have to calculate the pitch of the rafters as accurately as possible, because otherwise you run the risk of getting deflection of the sheets and diverging seams. This entails the rapid occurrence of corrosion and damage to the metal. In this case, the folded roof will not last long.
What are the installation technologies?
We have already said that the roof in this case can be made of solid sheets of metal, but this approach is becoming less and less popular every year. This is largely due to the fact that you have to very accurately observe the humidity and temperature conditions of the attic space. If you do not make all efforts for this, then as a result condensate will constantly form on the inner surface of the iron. You can guess the consequences yourself.
And therefore, the folded roof of rolled metal is becoming more common. The reason for this is the fact that the seams are very durable and high quality, rarely diverge even under a large layer of snow.
Benefits of Roll Mounting
Firstly, you can use not only galvanized steel, but also metal with polymer coating. Such a material has great resistance to corrosion, and therefore is able to last for more than a dozen years. In addition, the metal in the roll is quite flexible, which makes it possible to mount a double fold. As we said above, it has increased strength and tightness, practically does not let water through.
Even if the rebate roof is steep, the roll can be neatly rolled out, rather than being pulled separately at the risk of life on it. In addition, in this case, it will be possible to raise a machine for folding the folds on the roof: walking the device along the entire rolled roll is many times easier than messing with individual sections of the material.
Instruments
If you carefully read the material, then you yourself could come to the conclusion about the special importance of the tool that will be used to twist seam seams. There are two main types of clamping devices: mechanical and electrical.
If we talk about the first instrument, then these are two special frames. The first of them twists the main fold, after which the second frame covers it with the next seam. We have already talked about the electric typewriter. It is very convenient to use it, since it rolls a single fold in just one pass, after which it can be started in the opposite direction to twist the second seam. Of course, with the use of an electric tool, a metal seam roof takes much less time and effort.
The following devices will also be required:
- A few hammers with a flat and rounded head, normal pliers.
- Scissors for cutting metal.
- Drill, and quite powerful.
- Extension cord at least 30 meters in length.
- A screwdriver or a nozzle on a drill. However, we recommend the first option, as it is much easier.
- Rulers and tape measures.
The main stages of work
First, you need to select the appropriate type of lathing, and then calculate the optimal step of the rafters. It can be made not only from bars or boards, but even from a metal profile or profile pipes. The surface of the crate should be as flat as possible, not have potholes and indentations.
Important points of work
First, a vapor barrier membrane is placed on the rafter crate, which protects it from moisture. The lighter and stronger the material used for these purposes, the better ventilation will be, and the less metal will corrode. If you made a crate of wood, thoroughly soak it with an antiseptic solution before work, as this will increase the life of the roof several times.
Such a folded roof, the photo of which is in the article, easily lies for more than half a century, without requiring special measures to care for it.
The distance between the bars should be no more than 40 centimeters, since we already talked about the consequences of the opposite approach. Having installed the crate, mount the first sheet on the ridge. If you do not use rolled metal, then sheets of iron need to be submitted to the roof one at a time, since otherwise you seriously risk it - a sling can be broken.
Please note that the slat on the eaves is mounted in advance! After that, the support bar can be laid on the ridge. Do not forget about its installation also in the case of a tent roof (stacked in place of the stack). To make the roof more beautiful and whole, first lay the first and last sheets, carefully trimming them if necessary. Remember that after trimming the edges of the sheets you need to slightly turn outward.
In principle, the professional technology of installing the seam roof provides for their treatment with sealant, but you can do without it.
A bit about the recluses
The overlap of the sheets should be at least 40 millimeters, and it must be installed only on the lower overhang. If you are working with a ridge or cornice, then each sheet must be attached to the upper and lower bars on the crate. All fillers on the eaves and end parts must tightly close the cavity under the roof. It is best to fix them with self-tapping screws with a rubber gasket. So they will not become loose and will not fly away even after several years of service.
If you plan to use snow barriers or roofing bridges, be sure to mount them on the joint of sheets.
Notes on the "body kit"
The skate and ribs of the crate should be as straight as possible: before installation, be sure to check them using the building level. The lowest board, called the eaves overhang, should also not have any curvature.
Fix eaves immediately, without waiting for the beginning of installation of fold sheets. The gutter holders must therefore be attached even earlier. After that, the valleys are attached to the crate, and their bases are neatly and tightly closed with a high-quality edged board.
A strong and dense plastic film can be passed through the rafters, which will protect the tree from the action of penetrating moisture.
There is also a professional folded roof, the nodes of which are already fully prepared by the manufacturer. You just have to drag them to the crate, and then fix it.
Basic styling tips
Before this process, slopes are measured again. If they are rectangular, then all diagonals should be of equal length. Please note that the bottom seam should always be directed to the side from which you are installing. Accordingly, some sheets may need to be unfolded.
In all cases of longitudinal joints, the sheets are arranged from the bottom up. If the slope on your roof is more than six meters long, it should definitely be made compound. The fact is that otherwise it will be very difficult for you to transport sheets of iron or a whole roll of material to the top. As we already said, the material is imposed with an overlap. The pediment should be fixed so that it covers the fold. It needs to be mounted on roofing screws that have a durable rubber gasket.
A little bit about the skate
If we talk about the skate, then its flat and shaped varieties are allowed. In the case when the roof slope is more than 25 degrees, it must be mounted on reliable roofing screws. Attention! In those places that are adjacent to the wall, other buildings or pillars, it is necessary to lay a gasket made of rubber or plastic film. For the same purpose, a plastic wall profile is used.
This is how the do-it-yourself roof is made.